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40 lines
1.3 KiB
Diff
40 lines
1.3 KiB
Diff
From d08ef863feae14e4710bf2026404e6c6e06db2be Mon Sep 17 00:00:00 2001
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From: zhanchengbin <zhanchengbin1@huawei.com>
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Date: Mon, 10 Oct 2022 16:56:58 +0800
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Subject: [PATCH] misc/fsck.c: Processes may kill other processes.
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I find a error in misc/fsck.c, if run the fsck -N command, processes
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don't execute, just show what would be done. However, the pid whose
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value is -1 is added to the instance_list list in the execute
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function,if the kill_all function is called later, kill(-1, signum)
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is executed, Signals are sent to all processes except the number one
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process and itself. Other processes will be killed if they use the
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default signal processing function.
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Signed-off-by: zhanchengbin <zhanchengbin1@huawei.com>
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Signed-off-by: Lukas Czerner <lczerner@redhat.com>
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Reviewed-by: Zhiqiang Liu <liuzhiqiang26@huawei.com>
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Reviewed-by: Darrick J. Wong <djwong@kernel.org>
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Reviewed-by: Lukas Czerner <lczerner@redhat.com>
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Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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---
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misc/fsck.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/misc/fsck.c b/misc/fsck.c
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index 1f6ec7d9..1769a106 100644
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--- a/misc/fsck.c
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+++ b/misc/fsck.c
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@@ -547,6 +547,8 @@ static int kill_all(int signum)
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for (inst = instance_list; inst; inst = inst->next) {
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if (inst->flags & FLAG_DONE)
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continue;
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+ if (inst->pid <= 0)
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+ continue;
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kill(inst->pid, signum);
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n++;
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}
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--
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2.38.1
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